Measuring and testing – Simulating operating condition – Marine
Reexamination Certificate
2007-01-23
2007-01-23
McCall, Eric S. (Department: 2855)
Measuring and testing
Simulating operating condition
Marine
Reexamination Certificate
active
11099614
ABSTRACT:
When a purge amount while an engine is running is a first purge amount and the purge amount before failure diagnosis is larger than a required purge amount, an amount adsorbed in a canister before the failure diagnosis is executed is smaller than a predetermined determination value. Accordingly, an ECU executes the failure diagnosis. When the purge amount while the engine is running is a second purge amount and the purge amount before the failure diagnosis is equal to or smaller than the required purge amount, the amount adsorbed in the canister before the failure diagnosis is equal to or larger than the predetermined determination value. Accordingly the ECU does not execute the failure diagnosis. The required purge amount used for determining whether or not the failure diagnosis can be executed is determined according to the temperature before the failure diagnosis.
REFERENCES:
patent: 6474148 (2002-11-01), Takagi et al.
patent: 6971375 (2005-12-01), Amano et al.
patent: 2004/0250604 (2004-12-01), Watanabe et al.
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patent: 2005/0217348 (2005-10-01), Amano et al.
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patent: 2003-269265 (2003-09-01), None
Ito Tokiji
Miyahara Hideki
Nagasaki Kenji
Denso Corporation
Kenyon & Kenyon LLP
McCall Eric S.
Toyota Jidosha & Kabushiki Kaisha
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